package com.xu.blog_after_end.web.admin;

import com.xu.blog_after_end.po.Blog;
import com.xu.blog_after_end.po.Type;
import com.xu.blog_after_end.po.User;
import com.xu.blog_after_end.service.BlogService;
import com.xu.blog_after_end.service.TagService;
import com.xu.blog_after_end.service.TypeService;
import com.xu.blog_after_end.vo.BlogQuery;
import jakarta.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

@Controller
@RequestMapping("/admin")
public class BlogController {
    private static final String INPUT = "admin/blogs-input";    // 转发
    private static final String LIST = "admin/blogs";   // 转发
    private static final String REDIRECT_LIST = "redirect:/admin/blogs";    // 重定向
    @Autowired
    private BlogService blogService;
    @Autowired
    private TypeService typeService;
    @Autowired
    private TagService tagService;
    @GetMapping("/blogs")
    public String blogs(@PageableDefault(size = 8,sort = {"updateTime"},direction = Sort.Direction.DESC) Pageable pageable,     // 分页查询，默认每页大小为2，按更新时间降序排列
                        BlogQuery blog, Model model){
        model.addAttribute("types",typeService.listType());
        model.addAttribute("page",blogService.listBlog(pageable,blog)); // 分页查询博客
        return LIST;
    }

    @PostMapping("/blogs/search")   // 搜索
    public String search(@PageableDefault(size = 8, sort = {"updateTime"}, direction = Sort.Direction.DESC) Pageable pageable,
                         BlogQuery blog, Model model) {
        System.out.println("Blog type: " + blog.getTypeId());
        if (blog.getTypeId() != null) {
            System.out.println("Blog type ID: " + blog.getTypeId());
        } else {
            System.out.println("Blog type is null");    // blog.typeId为null
        }
        model.addAttribute("page", blogService.listBlog(pageable, blog));
        return "admin/blogs :: blogList";
    }


    @GetMapping("/blogs/input")
    public String input(Model model) {
        setTypeAndTag(model);
        Blog newBlog = new Blog();
        newBlog.setType(new Type()); // 初始化Type以避免null
        model.addAttribute("blog", new Blog());
        return INPUT;
    }
    private void setTypeAndTag(Model model) {
        model.addAttribute("types", typeService.listType());
        model.addAttribute("tags", tagService.listTag());
    }
    @GetMapping("/blogs/{id}/input")
    public String editInput(@PathVariable Long id, Model model) {
        setTypeAndTag(model);
        Blog newBlog = new Blog();
        newBlog.setType(new Type()); // 初始化Type以避免null
        Blog blog = blogService.getBlog(id);
        blog.init();    // 初始化tags
        model.addAttribute("blog", blog);
        return INPUT;
    }

    @PostMapping("/blogs")
    public String post(Blog blog, RedirectAttributes attributes, HttpSession session) {
        blog.setUser((User) session.getAttribute("user"));
        blog.setType(typeService.getType(blog.getType().getId()));
        blog.setTags(tagService.listTag(blog.getTagIds()));
        Blog b ;
        if (blog.getId() == null) {
            b = blogService.saveBlog(blog);
        } else {
            b = blogService.updateBlog(blog.getId(), blog);
        }
        if (b == null ) {
            attributes.addFlashAttribute("message", "操作失败");
        } else {
            attributes.addFlashAttribute("message", "操作成功");
        }
        return REDIRECT_LIST;
    }
    @GetMapping("/blogs/{id}/delete")
    public String delete(@PathVariable Long id, RedirectAttributes attributes) {
        blogService.deleteBlog(id);
        attributes.addFlashAttribute("message", "删除成功");
        return REDIRECT_LIST;
    }


}
